Pump



ug. 25, 1936. G. H STAUP V 2,052,497

PUMP

Filed March l2, 1935 2 Sheets-Sheet l f f f l ATTORN EY mmf G. H. sTAUP PUMP 2 Sheets-Sheet 2 Filed March 12, '1955 Patented Aug. 25, 1936 Sims PATENT OFM fippiieano'march 1.2, 1935, serial No, 10,727

1 claim. (ci. 7er-417) The invention relates to a fluid pump and more especially to motor operated rotary double piston pumps.

The primary object of the invention is the provision of a pump of this character, wherein through the instrumentality of gears, these acting as pumping pistons located at the bottom of a well, water will be pumped therefrom and the delivery pipe requires but a single check valve, the gears being of novel construction and the operating shaft is supported in glass bearings while the pistons work against a glass support to prevent friction and wear.

Another object of the invention is the provision of a pump of this character, wherein the same operates while submerged in a well and is constructed to be operated for a considerable period of time without necessitating frequent lubrication or repair, the antifriction bearings for the power shaft being in a bath of oil for constant lubrication.

A still further object of the invention is the provision of a pump of this character, which is comparatively simple in construction, thoroughly reliable and efficient in its operation, strong, durable, having the drive or power shaft entirely outside of the discharge pipe for the water and inexpensive to manufacture and install.

With these and other objects in View, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings, which disclose the preferred embodiment of the V,invention and pointed out in the claim hereunto appended.

In the accompanying drawings:

Figure 1 is an elevation of a pump constructed in accordance with the invention.

Figure 2 is an enlarged sectional View on the line 2 2 of Figure l looking in the direction of the arrows.

Figure 3 is a sectional view on the line 3 3 of Figure 2 looking in the direction of the arrows.

Figure 4 is a sectional View on the line 4-4 of Figure 2 looking in the direction of the arrows.

Figure 5 is a sectional view on the line 5-5 of Figure 1 looking in the direction of the arrows.

Figure 6 is an enlarged fragmentary sectional view through the gear casing of the pump.

Figure '7 is a fragmentary detailed plan View of the hub formation for one gear.

Figure 8 is an enlarged fragmentary side elevation of a motor coupling the same being partly in'fsection.

Similar reference characters indicate corresponding parts throughout the several views in the drawings. 5

Referring to the drawings in detail, the pump A is of the gear type having the elongated gears IIJ and II, respectively, these being comparatively small in ldiameter and are arranged within a pump cylinder I2 fitted at opposite ends 10 with the top and bottom caps i3 and Ill, respectively, the latter being formed with the annular flange l5 for a glass disk like bearing I6 supporting the weight of the gears I0 and and also for the fitting of the lower end of the cyl- 15 inder I2 in said cap I4 while the cap I3 has the annular flange receiving the upper end of the cylinder I2. The cylinder at one side thereof is provided with the inlet openings I8, these covered by wire mesh screen I9 and com- 20 municate with an intake chamber 20, the fluid or water received therein being passed between the gears IU and I l which constitute the double pistons into an outlet chamber 2|, these chambers 20 and 2| being formed in the cylinder I2 25 at opposite sides of the gears Ill and II operating therein.

The caps I3 and I4 are held fast on the opposite ends of the cylinder I2 by the tie rods 22, these being arranged an equidistance and are 30 passed through the caps and have threaded thereon the binding nuts 23.

'Ihe trunnions 24 and 25 of the gears I0 and I I are journaled in the cap I3 and the bearing I6 and with the trunnion 2 at its squared extended 35 coupling end 2E exteriorly of the pump cylinder is connected a power shaft 2l the same being fitted in bearings 28 distributed at intervals of the length of the shaft 21 and held by clamps 29 engaged with the outlet pipe 30 leading from the chamber 2|. This pipe 3d above the ground surface has fitted therewith a return check valve 3| and such pipe extends to a point of discharge for water lifted by the pump in the operation thereof within a well.

Upon a suitable support 32 at the top of the well is arranged a. gear head or casing 33 providing therein a lubricating chamber 34 in which are arranged the meshing gear and pinion 35 and 35, respectively, the gear 35 being provided with a capping hub 31 telescoped over a tube 38 stationarily mounted in the bottom 39 of the head or casing 33, the hub being fixed to the upper end of the shaft 21 and closes the upper end of the tube 38 to avoid the escape of lubricant from the chamber 34 through the tube 38. This tube 38 projects beneath the bottom 39 and has coupled with this projected end a glass bearing 4E] for the shaft 21. The pinion 36 is fixed to the drive shaft 4I of an electric motor 42 carried upon the support 32. The head or casing 33 carries a packing gland 43 surrounding the driving shaft 4I and this shaft is divided with the exible universal coupling 44 joining the divided parts thereof.

The gear coacts with an antifriction bearing 45 located between the bottom 39 and said gear. The coupling 44 functions as a shock absorber and allows exibility both as to alignment and torque in addition to preventing shock in the starting or" the motor 42.

The coupling for the glass bearing carries a sleeve like nut serving to hold the bearing 40 in place. It will be apparent that leakage is prevented by the capped hub 31 and the chamfered end at the top of the tube 38.

The gears I I) and I I rotate oppositely in suitable bores 41 provided in the cylinder I2 and the gear IO drives the gear II, these as previously stated being the pumping pistons for the water.

What is claimed is:

A gear box, for the purpose set forth, comprising a lubricant chamber, a tube in the chamber screwed in and extending beneath the bottom of said chamber, a shaft guided through the tube and a packing between the outer end of the tube and said shaft, a capping hub in the chamber telescoped over the tube and having the upper end of gthe shaft xed thereto, a gear wheel nding a bearing on the bottom of the casing and secured to the capping hub, a drive pinion in mesh with the gear having a shaft extending through a lateral bearing on the casing, and a packing for said shaft.

GEORGE H. STAUP. 

